Where do I start

Hi everyone, I am new to FB and I am curious about where I should start. At the beginning of the year, I began working out and watching videos but then I really busy which got me quite sick and I got quite lazy and weak because of that and I was 13 and now that I am 14 and wanting to get back into shape. I would really like to know if you have any good videos (i cant do programs because im broke) and/or advice too! Thank you, Lovee from Down Under!